1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lilit [14]
3 years ago
14

Solve 3x+4y=175x+4y=27​

Mathematics
2 answers:
Marta_Voda [28]3 years ago
6 0

Answer:

(5x+4y)-(3x+4y)=27-17

2x=10

x=10÷2

=5

Marianna [84]3 years ago
5 0

Answer:

x = 5, y = 1/2

Step-by-step explanation:

-3x - 4y = -17   Use the elimination method by adding the 2 equations together

5x+4y=27​

2x = 10   ===> x = 5

3(5) + 4y = 17,

4y = 2    ===> y = 1/2

You might be interested in
The area of a rectangular patio is 31 7/8 square meters. The width of the patio is 4 1/4 meters. What is the length? ( in simple
Allushta [10]

Answer:

it is good and people need to do math problems

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Select the ordered pairs that satisfy the equation y=1/5x.Check all that apply.
vovikov84 [41]

Answer: C, E, F

Step-by-step explanation:

  1. Plug in the "x" and "y" values from the ordered pairs into the equation.
  2. For A: 3 = \frac{1(5)}{5} → 3 ≠ 1 → A is eliminated.
  3. For B: 5 = \frac{1(1)}{5} → 5 ≠ \frac{1}{5} → B is eliminated.
  4. For C: 2 = \frac{1(10)}{5} → 2 = 2 → C satisfies the equation.
  5. For D: 10 = \frac{1(4)}{5}→ 10 ≠ \frac{4}{5} → D is eliminated.
  6. For E: -1 = \frac{1(-5)}{5}→ -1 = -1 → E satisfies the equation.
  7. For F: 3 = \frac{1(15)}{5}→ 3 = 3 → F satisfies the equation.
  8. Therefore, C, E, and F are the answers.

4 0
3 years ago
Read 2 more answers
A number a decreased by 7 is 2.
umka21 [38]

Answer:

9

Step-by-step explanation:

Let's first convert this to numbers. When a number is decreased by a certain amount, that is the same as saying that something is subtracted from it. Therefore:

a-7=2

Add 7 to both sides:

a-7+7=2+7

a=9

Hope this helps!

7 0
3 years ago
Read 2 more answers
Please help need it asap
densk [106]
The extraneous root is
x = 2
7 0
3 years ago
Use this graph of velocity vs. time for two objects to answer the question.
Lynna [10]

Using derivatives, it is found that the correct option is:

A. Object C has an acceleration that is greater than the acceleration for D.

The acceleration is the <u>derivative of the velocity</u>, given by change in velocity divided by change in time, that is:

a = \frac{\Delta_v}{\Delta_t}

In this problem:

  • The change in time for objects C and T is the same.
  • The <u>change in velocity for object C is greater</u>, thus, it has a greater acceleration, and the correct option is:

A. Object C has an acceleration that is greater than the acceleration for D.

A similar problem is given at brainly.com/question/14516604

6 0
3 years ago
Read 2 more answers
Other questions:
  • Solve this equation. 7.85 + q is less than or equal to -18.15
    10·2 answers
  • What is two thirds to the negative cubed power¿
    12·1 answer
  • In a sports equipment locker, there are 81 balls and 45 baseball mitts. Write the ratio of balls to baseball
    8·1 answer
  • Which expression is equivalent to 6(4x + 3y)?
    8·2 answers
  • A circle with center P is shown. RS and ST are tangent to circle P. What is the degree measure of angle RST
    7·1 answer
  • Michael bought 4 types of fruit to make a fruit salad. He paid $3.00 per pound of apples, $2.00 per pound for bananas, $2.50 per
    9·2 answers
  • If the product of two numbers is equal to zero then at least one of the numbers must be zero
    10·2 answers
  • The length of a rectangle is 7cm longer than its width. Find the dimensions of the rectangle that make the area of the rectangle
    10·1 answer
  • ILL MARK BRAINLIEST!!! Someone just help!! Anyone!!
    13·1 answer
  • Solve the exponential equation below. Express your answer exactly (i.e. do not round), usingthe common log. You must show your w
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!